AKA (Label): MODEL 501,
Origin: Japan (List),
Power: 6V: (AA x4),
Display: Type = Display (LCD) (List),
Number of keys: 35, #Key-Black: 8, #Key-Brown: 12, #Key-White: 12, #Key-Yellow: 3,
Keyboard Array (Rows x Columns): 06x04,
Classification: / Desktop with Display+Printer / Printer (thermal),
Featuring: Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: NATIONAL SEMICONDUCTOR_parts: (Box) 501,
Known Serial-numbers: 100271 (List of all S/Ns from NATIONAL SEMICONDUCTOR)
Collector value: 7/10,